Finding the Fourth Proportional to 105,998.93, 159,015.69 and 31,121.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,998.93 : 159,015.69 = 31,121.52 : x
2. Step 2: Convert to fraction form
   105,998.93/159,015.69 = 31,121.52/x
3. Step 3: Cross multiply
   105,998.93x = 159,015.69 × 31,121.52
4. Step 4: Simplify right side
   105,998.93x = 4,948,809,380.34
5. Step 5: Solve for x
   x = 4,948,809,380.34/105,998.93
6. Step 6: Final answer
   x = 46,687.35